A206939 Number of 6Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.

33, 1089, 9055, 170409, 2967939, 40316253, 659747611, 10405676997, 157403120837, 2479765407533, 38584141407985, 596657906957549, 9306402002435837, 144634043653494289, 2246314891033601445, 34949152336387277125

Offset: 1

Author

R. H. Hardin Feb 13 2012

Keywords

• nonn

Comments

Row 6 of A206936

Examples

			Some solutions for n=4
..0..1..1..1....0..1..1..0....0..0..1..0....0..0..1..0....0..1..1..0
..1..0..1..1....1..1..0..1....0..1..0..1....0..1..1..1....0..1..0..1
..0..1..0..1....0..0..1..0....1..0..1..0....1..0..1..0....0..0..1..0
..1..0..0..1....1..1..0..0....0..1..0..0....0..0..1..1....0..1..0..0
..0..1..1..0....0..0..1..1....0..0..1..1....1..1..1..0....1..0..0..1
..1..0..0..1....1..1..0..0....0..1..0..0....0..0..1..0....0..0..1..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210